Feed-regulator for screening and other apparatus



G. H. FRASER. FEED REGULATOR FOR SCREENING AND OTHER APPARATUS.APPLICATION FILEDJUNEII.19I5

1,384,31 3. Patented July 12, 1921..

3 SHEETS-SHEET I.

INVE NTOR WITNESSES: I w; 7% A Mm. MAZM G. H. FRASER.

FEED REGULATOR FOR SCREENING AND OTHER APPARATUS.

APPLICATION FILED JUNE HI 1915. 1,384,313. Patented July 12, 1921.

3 SHEETS-SHEET IIIII IILL IIII IIIIIIIIIIIIIIIIIIIIIIIIIIJIIWMUMJMMHHII../I P a IIII I I I I I II.I .II.IL :.IIIIIIIIII.:. i .IIIIrIi y o I I IIIv II I n R I III I I I I L l i I INVENTOR WITNESSES:

G. H. FRASER.

FEED REGULATOR FOR SCREENING AND OTHER APPARATUS. APPLICATION man JUNE11. 1915.

1,384,.3 1 3, Patented July 12, 1921.

3 SHEETS-SHEET 3.

2 r* INVENTOR WITNESSES:

,4 m Aim/M UNITED, STATES PATE T F E GEORGE HoL'rrnAsER, or' RooKLYN,new YORK.

FEED-REGULATOR FOR SCREENING AND OTHER APPARATUS.

Specification of Letters Patent.

"Patented July 12, 1921.

Original application filed December 31, 1907, Serial No. 408,772."Divided and this application filed June T 0 all 10 710m it may co nce mBe it known that I,'GEORGE HOLT FnAsnR, a citizen of the United States,residing in the borough of Brooklyn, county of Kings, city and State ofNew York, have invented certain new and useful Improvements inFeed-Regulators for Screening and Other Apparatus, of which thefollowing is a specification, being a division of my application filedDecember 81, 1907, Serial No. 408,772.

This invention relates to feeders for apparatus for screening and thelike and aims to provide certain improvements therein especiallyapplicable to inclined screens.

To this end the invention provides certain improvements in constructionwhich will be hereinafter more fully set forth with reference to theaccompanying drawings, in which Figure 1 is a side elevation of thepreferred form of my improved feeder as applied to a screen;

Fig. 2 is a rear elevation thereof partly broken away to show sectionson different planes, and

Fig. 3 is a vertical cross-section cut on the line 33 in Fig. 2.

Referring to the drawings, A is the main frame or casing as a whole, Bare the screen members therein, C is the feed hopper, D is the coarseoutlet, E is the fine outlet, F is the drive pulley and G are thevibrators.

According to the preferred embodiment of my invention, the casing is atubular member hinged at a to feet Z), and adjustably connected at c tolegs d so that it can be tilted to vary the inclination of the screen.It is preferably made entirely of metal, and in its preferred formconsists of cast iron pieces 6 which are united by braces f, g, 72. andi,the top of the casing being inclosed by removable hinged doors y, andthe back by a hingedbottom 7c, the front being closed by a verticallysliding door Z, and the bottom being open for the outlets D and E. Theupper part of the casing is formed with front and rear doors m which.inclose the distributing conveyer, and with a reversible top plate a,which, with the hopper C, can be removed and placed so as to locatethehopper at either side of themachine.

The side pieces c are preferably formed with a lower body portion 0 andan upper head portion p with an intermediate flange Serial No. 33,465.

,and with hearing supports 1", all in one integral casting. The bodyportion 0 has a lower edge 8 of greater angularity than its upper edge,and against which the back or bottom closes. The upper edge has a flange23 against which the top covers j set to close the top of the body,which flange has notches or recesses 24 u to receive correspondingprojections 01 e on the covers, so that the latter will not slip down incase either end is raised.

On its inner face each side is provided with a shoulder or flange Hagainst which the screen member rests and by which the latter isarrested in its upward movement, which shoulder is preferably a part ofthe casting. V

Preferably internal flanges w are provided on the head 39 for supportingcross angles 50, which, with a plate y resting on them constitute thetrough for the distributing conveyer I. Adjustable or tilting feed bars,edges or. plates J are fastened on the front and rear sides of thistrough, and are tilted to the angle necessary" to cause the conveyor tofeed material from the trough over the edge of the plates in anapproximately uniform stream from end to end, according to whichdirection the conveyer is driven. The feed plates have out-bent ears 2which are engaged by adjusting bolts or suspension members a whichextend above or without the casing for supporting and for adjusting theangularity of the plates. "While, of course, various suitable means maybe employed for adjustably fastening the feed edges J to the trough, Ihave shown bolts 2 on the crossangles m, extending through slots 2 inthe feed plates J, and wing nuts .2 applied to the outer end of thebolts 2% The conveyer has a driving shaft K, on one end of which ismounted the drive pulley F, and on the other end of which is a crankb"or other provision for operating the agitating mechanism for thescreen.

The hopper C has flanges 0 depending at each side of the conveyer toprevent material from shooting upwardly before it falls into the trough,and it has a transverse flange (Z on which the top a is fastened.

Beneath the conveyor is a deflector'plate L extending from the backdownwardly over the screen member,and opposite this is a reverseinclined feed plate M extending from the front rearwardly, beneath, the

screen. These plates are spaced apart from the conveyerv trough toafford passages or conduits for conducting material forwardly orrearwardly thereunder to the outlet aperture N. Above these plates is adeflecting:

flange O which prevents the plates from rising, and deflects toward thecenter any material-falling closeto thewall. Stops e are provided forlimiting the downward movement of these plates. Each plate can he slidupwardly and outwardly through the adjacent door m. g

The bearings for the shafts are preferably semi-spherical bearings 'Q,insuring alinement independently of any skewing of the frame, andpermitting sufl'icient rocking of any shaft to enable it to be cantedsulficiently to remove it without, taking apart the-frame when the shafthas been slid endwi'se in the bearing enough to freeit from the oppositebearing. These bearings are made by casting or forming 011 the sidepieces 6 the brackets o which have a cylindrical bore 21 in which fits aspherical por tion 7'" on the bearing, so that the latter can, rock inany direction. Each bearing is formed with an oil cup is" havingprojecting ears Z which are cottered or otherwise fastened to a rib m onthe bracket 1', thus preventing the bearings from falling out. Oilcovers a are likewise fastened to these ears.

In operating, with the construction'shown,

the hopper C is placed at whichever side of the machine it is desired tofeed the material, and the conveyer I is revolved inwhichever directionis necessary to pushthe material from the hopper toward the other end ofthe machine. The bottom y of the trough is shorter than the length ofthe conveyer, and is moved from one end to the other of the trough inorder to leave the bottom outlet opening 0 at the end of the troughremote from the feed hopper, so that any material not thrust over thefeed edges may fall through this end. The front and rear feed plates aretilted until the material flows across one or the other in a uniformfilm from end to end. 1

When material is fed to the hopper, the

conveyer will then distribute it evenly onto either the rear feedplate Lor the front feed plate M, according to the direction of rotation of theconveyer. If the feed falls onto the rear plate L, it will flowforwardly down the latter and onto the screen close to the screensurface. If it falls onto the screen plate it will flow backwardly downthe latter, under the conveyer trough, and be discharged onto the otherplate L, down which it will flowonto the screen. The feed plate L restsonthe screen member and is a normal inclination of 45 degrees as much asdesired. a V,

lVhen theseadjustm'ents have beenproperly made the material willfiowdown in'a wide thin stream under the conveyer" and onto the screensurface in a thin film, and the agitation will prevent clogging of theinterstices, and will facilitate the flow of the coarse particles downover the screen and discharge of the fines through the screen. Thefinesfalling through the screen will flow down the steeper inclined bottom isto the fine outlet E, the greater inclination of this bottom insuring agravity flow even when the adjustment is such that the screen memberitoo flat for a gravity flow without vibration. 7

Operation of the distributing conveyer may be observed through eitherthe front or rear doors, and the knockers and screen 'action may beobserved through the top door j. The screen frames may be removed bysliding them backwardly out through the back door 9" or forwardlythrough the front door Z after their clamping screws r and clampingplates 8 have beenremoved, or access to their rear may be had by turning down the bottom door is, or they may be released from their springsupports and turned down on the bottom door and taken out and replacedwhile in this position.

If the material being screened is damp, it may be ventilated or driedbytilting up the lower edge of one top door and'opening the back door thusaffording ventilating conduit or passage beneath the feed plates forpermitting a current of air to flow backwardly through "the casingdownwardly through the screen and outwardly at rear. A piece of'screen 6may be placed inside of the door g" .to prevent dust floating out duringsuch ventilation. V V

For dry feeding. the apparatus may be used as shown, and for wet feedingit may be immersed in water. V i

It will be seen that the legs can be folded against the body, and thatthe apparatus can be easily taken apart for packing in knock-down shape,and assembled for use; also that the driving pulley and agitatingmechanism can be placed at either side by simply removing the shafts andtheir corinections, and reversing their positions before againassembling them.

It will be seen that this invention provides means which can be readilyand advantageously availed of, audit will be understood that theinvention is not limited to the particular details of arrangement,construction or combination set forth as constituting its preferredform, since the improvements can be employed in whole or in partaccording to such modifications or adaptations as the judgment of thoseskilled in the art may dictate, without departing from the spirit of theinvention.

I claim as my invention:

1. In combination, a casing affording an elongated distributing chamber,a trough or member mounted in said casing and having longitudinallyextended edges at its front and rear sides opposite and spaced apartfrom the adjacent walls of said casing and affording downwardlyextending conduits or passages between said walls and said trough formaterial discharged from said trough, a revolving distributer mounted insaid trough for discharging material over either edge thereof in a widethin stream, means exteriorly of said casing for adjusting said trough,and means for revolving said distributor in either direction fordischarging material into either one or the other of said conduitsaccording to the direction of revolution of said distributer.

2. In combination, housing means affording an elongated distributingchamber, a reversibly revoluble longitudinally feeding laterallydischarging distributing screw conveyer mounted in said chamber, meansaffording a trough for said conveyer having a discharge edge at andextending longitudinally of each side of the latter within said chamberand spaced apart from the longitudinal walls thereof to afford-a passageat each side of said trough for material distributed by said conveyer,said trough comprising a plate below said conveyer movably mounted toafford an outlet at either end of the trough, said housing havingsupports on which said plate is movably mounted, and adjusting means forsaid trough exteriorly of said housing.

3. In combination, housing means affording an elongated distributingchamber, a reversibly revoluble longitudinally feeding laterallydischarging distributing screw conveyer mounted in said chamber, meansaffording a trough for said conveyer having a discharge edge at andextending longitudinally of each side of the latter within and spacedapart from the longitudinal walls of said chamber for affording apassage within the latter between said trough and said walls formaterial distributed by said conveyer, said trough comprising a partbelow said conveyer movable to afford an outlet at either end of thetrough, said housing having supporting means on which said part isremovably sustained, and means exteriorly of said housing for adjustingsaid trough.

a. In combination, a housing affording an elongated distributing chamberand having a movable cover of less length than said chamber applicableto either end of said housing'to afford an inlet opening at the otherend of the latter, a reversibly revoluble longitudinally feedinglaterally discharging distributing screw conveyer mounted in saidchamber, means for revolving said conveyer in either direction, andmeans affording a trough for said conveyer for discharging material fromeither side thereof within and spaced apart from the adjacentlongitudinal walls of said chamber and affording a pas sage between saidtrough and the adjacent walls for material distributed by said conveyer,on which said trough is adj ustably mounted.

5. In combination, housing means affording an elongated distributingchamber having a cover of less length than said chamber applicable tosaid housing to afford an inlet at one end thereof in one position andat the other end thereof in another position, a resaid housing havingsupporting means versibly revoluble longitudinally feeding laterallydischarging distributing screw con; veyer mounted in sald chamber, meansfor revolvmg said conveyer in either direction,

means affording a trough for said conveyer having an adjustabledischarging plate at each side of said conveyer within and spaced apartfrom the adjacent longitudinal walls of said chamber and affording apassage between said trough and said walls for material distributed bysaid conveyer, said housing having supporting means on which said platesare adjustably mounted, and means exteriorly of said housing foradjusting said plates respectively. 7

In witness whereof, I have hereunto-signed my name in the presence oftwo subscribing witnesses.

GEORGE HOLT FRASER.

Witnesses:

SIGVARD Gr. HELLEM, GUs'rAr Sononnnrr.

